I am so sorry for the report above. On a clean Feisty installation (same computer, same server) I was able to connect using vpnc 0.4.0ubuntu1.1 to my Cisco VPN Server.
I can however garantee that the problem I had before was consistent: 0.4.0-1.1 didn't work but 0.3.3 did. I tried several times, totally removing ("Complete removal" option on synaptics) everything related to vpnc between different attempts.
I am so sorry for the report above. On a clean Feisty installation (same computer, same server) I was able to connect using vpnc 0.4.0ubuntu1.1 to my Cisco VPN Server.
I can however garantee that the problem I had before was consistent: 0.4.0-1.1 didn't work but 0.3.3 did. I tried several times, totally removing ("Complete removal" option on synaptics) everything related to vpnc between different attempts.